The paper is not about reducing nighttime cirrus clouds. It's about the goal of reducing cirrus clouds, period.
The method described would aim to increase ice crystal size, increasing fall speed to reduce the cirrus clouds. Radiative forcing in cirrus clouds by
OLR doesn't only occur at night.

The objective
would not be to seed
speciﬁc cloud systems but rather to build up a background
concentration of aerosol seeding material so that the air masses
that cirrus will form in will contain the appropriate amount
of seeding material to produce larger ice crystals. Since the
residence time of seeding material might be on the order of
1–2 weeks, release rates of seeding material would need to
account for this.

That's not daytime production, nighttime reduction they're talking about. "Larger ice crystals" = less 'hang time'. The "modification" in your title
of the link is about reduction.

Since commercial airliners routinely ﬂy in the region where cold cirrus clouds exist, it is hoped that the seeding
material could either be (1) dissolved or suspended in their jet fuel and later burned with the fuel to create seeding aerosol, or (2) injected into
the hot engine exhaust, which should vaporize the seeding material, allowing it to condense as aerosol in the jet contrail. The objective would not
be to seed speciﬁc cloud systems but rather to build up a background concentration of aerosol seeding material so that the air masses that cirrus
will form in will contain the appropriate amount of seeding material to produce larger ice crystals. Since the residence time of seeding material
might be on the order of 1–2 weeks, release rates of seeding material would need to account for this. With the delivery process already
existing, this geoengineering approach may be less expensive than other proposed
approaches.

This result shows the increased cirrus coverage, attributable to air traffic, could account for nearly all of the warming observed over the United
States for nearly 20 years starting in 1975

The other astonishing thing is that I was proven wrong with my assumption contrails would not even show up on satellite imagery.

This enhanced infrared image from NASA's Terra satellite shows a widespread outbreak of contrails over the southeastern United States during the
morning of January 29, 2004.

Obviously they do as the above image shows. There is some massive cloud coverage going on caused by contrails so the idea that those affect the
weather significantly is not far off.

These are not CONTRAILS. CONTRAILS do NOT show up on satellites because by their very definition they dissipate, or DISSOLVE. This is purely
MIS-INFORMATION BY NASA. Those ARE CHEMTRAILS in the picture, because CHEMTRAILS, caused by GEO-ENGINEERING, contain powdered metals like barium and
aluminum, which do indeed show up in satellite images, and linger in the atmosphere. CONTRAILS DO NOT LINGER IN THE ATMOSPHERE.

This is sheer stupidity and blatant ignorance. I am beginning to lose hope in this website

a reply to: MagicWand67
And this, from the paper is of the utmost importance for context

The exploratory investigation described here indicates that cirrus cloud seeding
is also having the potential to fully neutralize the radiative forcing from a CO2 doubling. In addition, this approach could be relatively inexpensive
if a method were developed to disperse the seeding material from commercial aircraft and the commercial airline industries were willing partners. The
details of what would be the ideal ambient concentration of seeding material and how much seeding material would be needed to realize this
concentration have not yet been worked out

I have known this since....well....since I looked up at the sky and watched as over a period of one hour, 15 planes cover the sky with a veil of
spreading contrails like cotton being unraveled over the blue background. I must admit I did think it was chemtrails at some point, but some good
souls here on ATS got through to me, however that point always bugged me still, the one about contrail staying there and influencing the sun rays to
either stay in or kept out..

edit on 4-7-2014 by bitsforbytes because: trails of con or chem are still trails in the sky.

originally posted by: MALBOSIA
I was trying to remember that last pure blue sky I have seen. You know that super deep and vibrant blue? It must have been years. Every day there is
a haze below the clouds. Every day.

I have known this since....well....since I looked up at the sky and watched as over a period of one hour, 15 planes cover the sky with a veil of
spreading contrails like cotton being unraveled over the blue background. I must admit I did think it was chemtrails at some point, but some good
souls here on ATS got through to me, however that point always bugged me still, the one about contrail staying there and influencing the sun rays to
either stay in or kept out..

Ha ha, you mean you got pounced on by a massive flock of angry chemtrail deniers determined to put you in your place immediately?

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